CN212594024U - CO2 split reboiler structure - Google Patents
CO2 split reboiler structure Download PDFInfo
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- CN212594024U CN212594024U CN202022160717.6U CN202022160717U CN212594024U CN 212594024 U CN212594024 U CN 212594024U CN 202022160717 U CN202022160717 U CN 202022160717U CN 212594024 U CN212594024 U CN 212594024U
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- reboiler
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Abstract
The utility model provides a CO2The split reboiler structure comprises a rectifying tower and a reboiler, wherein a liquid outlet at the bottom of the rectifying tower is connected with a liquid inlet pipeline at the bottom of a reboiler shell side through a pipeline, a gas phase inlet at the middle part of the rectifying tower is connected with a gas phase outlet at the shell side of the reboiler through a pipeline, and the gas phase outlet at the shell side of the reboiler is connected with the gas phase inlet at the middle part of the rectifying tower. The utility model discloses a components of a whole that can function independently reboiler structure for rectifying column bottom CO2The liquid obtains a new heat source, and the non-condensable gas is vaporized and separated again; the utility model discloses can design its structural style wantonly according to actual need, heat transfer effect size can improve reboiling efficiency, obtains bigger throughput. The utility model discloses reboiler shell sideInternal CO2The liquid level accessible level gauge monitoring and the accurate control of liquid level control valve, temperature accessible thermometer monitoring and temperature control valve adjustment improve the rectification purification effect to obtain the carbon dioxide product of higher accuracy.
Description
Technical Field
The utility model belongs to the technical field of the chemical industry equipment technique and specifically relates to a carbon dioxide rectification purification reboiler structure.
Background
Rectification purification is to prepare high-purity CO2Key technology of product, using liquid CO to be rectified2Wherein the components are the sameUnder one pressure, the physical characteristics of different volatility and different condensation temperature are provided, so that light component non-condensables in the liquid phase are volatilized and transferred to the gas phase, and heavy component high condensation temperature substances in the gas phase are transferred to the liquid phase, thereby realizing the purpose of separating each component.
However, in the process of non-condensables volatilization, a heat source needs to be provided for the rectifying tower to ensure that liquid CO is in a liquid state2The temperature rises. At present, the common method is that the height of a rectifying tower is increased and the amount of filler is increased. Or the bottom is additionally provided with a heat exchange section, and the liquid exchanges heat with a heat source in a tube pass in the downflow process of the heat exchange section at the bottom to increase the temperature of the liquid. The heat exchange section is limited by the structure of the rectifying tower and can only be made into a fixed tube-plate heat exchanger with a single tube pass or a coil soaking type. The heat exchanger has low heat exchange effect, and when the required heat exchange amount is large, the volume of the heat exchange section is overlarge, the rectification tower cannot bear the heat, the design of the heat exchange section is too small, the heat source is insufficient, and the rectification purity is influenced. In addition, the liquid loading of the heat exchange section is less, the liquid level and the temperature can not be controlled, and the purity of the rectified liquid CO2 can not meet the high-precision requirement.
Therefore, it is necessary to design a CO2 split reboiler structure to solve the above problems.
Disclosure of Invention
To the deficiency of the prior art, the utility model provides a CO2A split reboiler structure.
The technical scheme of the utility model is that: CO (carbon monoxide)2The split reboiler structure comprises a rectifying tower and a reboiler, a liquid outlet at the bottom of the rectifying tower is connected with a liquid inlet pipeline at the bottom of a reboiler shell side through a pipeline, and a gas phase inlet at the middle part of the rectifying tower is connected with a gas phase outlet at the shell side of the reboiler through a pipeline.
Preferably, the reboiler is independently arranged as a complete U-shaped pipe kettle type reboiler, a condensing medium is taken as a heat source on a pipe side, and CO is taken on a shell side2A medium.
Preferably, the tube side inlet of the reboiler is connected with a high-temperature condensed gas pipeline.
Preferably, the tube side outlet of the reboiler is connected with a low-temperature condensate outlet pipeline.
Preferably, a temperature regulating valve is arranged on the low-temperature condensate outlet pipeline.
Preferably, a shell-side gas phase outlet of the reboiler is connected with a middle gas phase inlet of the rectifying tower.
Preferably, the shell-side liquid phase outlet of the reboiler is connected with CO2Product outlet line connection, said CO2And a liquid level regulating valve is arranged on the product outlet pipeline.
Preferably, a liquid level meter is arranged on a shell pass cylinder of the reboiler and is connected with a liquid level regulating valve, the opening degree of the temperature regulating valve is regulated through PID (proportion integration differentiation), the condensation flow is controlled, and the shell pass temperature control of the reboiler in the evaporation process is realized.
Preferably, a thermometer is arranged on a shell pass cylinder of the reboiler, the thermometer is connected with a temperature regulating valve, the opening degree of the temperature regulating valve is regulated through PID (proportion integration differentiation), the condensation flow is controlled, and the shell pass temperature control of the reboiler in the evaporation process is realized.
The utility model has the advantages that:
1. the utility model provides a components of a whole that can function independently reboiler structure for rectifying column bottom CO2The liquid obtains a new heat source, and the non-condensable gas is vaporized and separated again;
2. the utility model discloses its structural style can be designed wantonly according to actual need to components of a whole that can function independently reboiler structure, and the heat transfer effect size can improve reboiling efficiency, obtains bigger throughput.
3. The utility model discloses CO in reboiler shell side2The liquid level accessible level gauge monitoring and the accurate control of liquid level control valve, temperature accessible thermometer monitoring and temperature control valve adjustment improve the rectification purification effect to obtain the carbon dioxide product of higher accuracy.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure, 1-rectifying column, 2-reboiler, 5-CO2A product outlet pipeline, a 6-high-temperature condensed gas pipeline, a 7-low-temperature condensed liquid outlet pipeline, 8-a liquid level meter, 9-a thermometer, 10-a liquid level regulating valve and 11-a temperature regulating valve.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in FIG. 1, the present embodiment provides a CO2The split reboiler structure comprises a rectifying tower 1 and a reboiler 2, wherein a liquid outlet at the bottom of the rectifying tower 1 is connected with a liquid inlet pipeline at the bottom of a shell pass of the reboiler 2 through a pipeline, and a gas phase inlet at the middle part of the rectifying tower 1 is connected with a gas phase outlet at the shell pass of the reboiler 2 through a pipeline. The middle gas phase inlet of the rectifying tower 1 is connected with the shell pass gas phase outlet of the reboiler 2 through a pipeline; liquid CO rectified by the packing section of the rectifying column 12The product flows into the shell pass of the reboiler 2 from the bottom of the device through a pipeline, and passes through the reheated and vaporized CO of the reboiler 22The gas and non-condensable gas mixture returns to the rectifying tower 1 through a pipeline and participates in the rectifying process again as an ascending gas source.
Preferably, the reboiler 2 is independently arranged as a complete U-shaped pipe kettle type reboiler, a condensing medium is taken as a heat source on a pipe side, and CO is taken on a shell side2A medium. The kettle-type reboiler can ensure that the shell side has enough liquid phase and gas phase space, the liquid is soaked in the heat exchange tube for uniform reheating, and the gas phase separation is more sufficient. The U-shaped heat exchange tube has high heat exchange efficiency and saves cost and space.
Preferably, the tube side inlet of the reboiler 2 is connected with a high temperature condensed gas pipeline 6.
Preferably, the tube side outlet of the reboiler is connected with a low-temperature condensate outlet pipeline 7.
Preferably, a temperature regulating valve 11 is arranged on the low-temperature condensate outlet pipeline 7.
Preferably, the shell-side liquid phase outlet of the reboiler 2 is connected with CO2Product outlet line 5, said CO2A liquid level regulating valve 10 is arranged on the product outlet pipeline 5.
Preferably, a shell pass cylinder of the reboiler 2 is provided with a liquid level meter 8, the liquid level meter 8 is connected with a liquid level regulating valve 10, the opening degree of the temperature regulating valve 10 is regulated through PID (proportion integration differentiation), condensation flow is controlled, and shell pass temperature control of the reboiler 2 in an evaporation process is realized.
Preferably, a thermometer 9 is arranged on a shell-side barrel of the reboiler 2, the thermometer 9 is connected with a temperature regulating valve 11, the opening degree of the temperature regulating valve 11 is regulated through PID, the condensing flow is controlled, and the shell-side temperature control of the reboiler 2 in the evaporation process is realized.
The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.
Claims (9)
1. CO (carbon monoxide)2The split reboiler structure is characterized by comprising a rectifying tower and a reboiler, wherein a liquid outlet at the bottom of the rectifying tower is connected with a liquid inlet pipeline at the bottom of a reboiler shell side through a pipeline, and a gas phase inlet at the middle part of the rectifying tower is connected with a gas phase outlet at the shell side of the reboiler through a pipeline.
2. CO according to claim 12Components of a whole that can function independently reboiler structure, its characterized in that: the reboiler is independently set as a complete U-shaped tubular kettle type reboiler, a condensing medium is taken as a heat source on a tube side, and CO is taken on a shell side2A medium.
3. CO according to claim 22Components of a whole that can function independently reboiler structure, its characterized in that: and a tube side inlet of the reboiler is connected with a high-temperature condensed gas pipeline.
4. CO according to claim 32Components of a whole that can function independently reboiler structure, its characterized in that: and a tube side outlet of the reboiler is connected with a low-temperature condensate outlet pipeline.
5. CO according to claim 42Components of a whole that can function independently reboiler structure, its characterized in that: and a temperature regulating valve is arranged on the low-temperature condensate outlet pipeline.
6. CO according to claim 22Components of a whole that can function independently reboiler structure, its characterized in that: and a shell-side gas phase outlet of the reboiler is connected with a middle gas phase inlet of the rectifying tower.
7. CO according to claim 62Components of a whole that can function independently reboiler structure, its characterized in that: the shell side liquid phase outlet of the reboiler and CO2Product outlet line connection, said CO2And a liquid level regulating valve is arranged on the product outlet pipeline.
8. CO according to claim 72Components of a whole that can function independently reboiler structure, its characterized in that: the shell pass barrel of the reboiler is provided with a liquid level meter, the liquid level meter is connected with a liquid level regulating valve, and the opening degree of the liquid level regulating valve is regulated through PID.
9. CO according to claim 82Components of a whole that can function independently reboiler structure, its characterized in that: the shell side barrel of the reboiler is provided with a thermometer, the thermometer is connected with a temperature regulating valve, and the opening degree of the temperature regulating valve is regulated through PID.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022160717.6U CN212594024U (en) | 2020-09-28 | 2020-09-28 | CO2 split reboiler structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022160717.6U CN212594024U (en) | 2020-09-28 | 2020-09-28 | CO2 split reboiler structure |
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| CN212594024U true CN212594024U (en) | 2021-02-26 |
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| CN202022160717.6U Active CN212594024U (en) | 2020-09-28 | 2020-09-28 | CO2 split reboiler structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113713407A (en) * | 2020-09-28 | 2021-11-30 | 珠海共同低碳科技股份有限公司 | CO (carbon monoxide)2Split reboiler structure |
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2020
- 2020-09-28 CN CN202022160717.6U patent/CN212594024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113713407A (en) * | 2020-09-28 | 2021-11-30 | 珠海共同低碳科技股份有限公司 | CO (carbon monoxide)2Split reboiler structure |
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